Has anybody converted a stock plug to a draining magnetic one? This is on my to-do list.
It shouldn't be that hard to drill the large nut, tap it and use a plain bolt for a plug. It looks to me like there is adequate material for the plug threads.
The purchased magnetic plugs have a built up area for the small plug. You could silver solder a nut or slug on the large nut to make the head thicker, and drill and tap through it.
To make a magnetic bolt, spot drill the business end of a plain bolt and loctite in a small super magnet. Or skip the spot drill and just locktite the magnet to the bolt.
Okay, it is easier to buy one ready-made. But since when was owning a Norton all about easy.
Stephen Hill